import javax.swing.*;
import java.awt.*;

public class MainTest extends JFrame {
    public static void main(String[] args) {
        new MainTest();
    }
    public MainTest() throws HeadlessException {
        this.setSize(400,400);
        this.setTitle("第一个版本");
        this.setVisible(true);

        // 增加更多log记录
    }
}
